In order to improve the view angle of thin film polarizing beam splitter(PBS),based on the equivalent refractive index formula of symmetric film system and the stop-band theory,we design a periodic multilayer PBS with wide angle.Electron beam evaporation method is used to fabricate LHL periodic multilayer PBS.UV3101-PC spectrophotometer is used to measure the transmittance spectrum of PBS at different incidence angles,A test system is set up to test the extinction ratios of the PBS.The results show that the...